Picture frame



FIG. 1 is a top plan view of a picture frame in an open condition, showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an end elevational view thereof;

FIG. 4 is a front elevational view of the design shown in FIG. 1 in a closed and reclining condition;

FIG. 5 is a side elevational view thereof; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a picture frame, substantially as shown. 